Across
- 4. The birth of mountains
- 8. Region of the upper mantle just below the lithosphere
- 11. The study of past climates using tree rings
- 12. Abbreviation; complex, computer-based climate model
- 13. Two words; Species that are brought and introduced to a new ecosystem
- 17. A migrating piece of Earth's crust, dragged about by plate tectonics
- 18. The inner portion of the Earth, one-third of it's entire mass
- 19. The dominant vegetation type extending across a region
- 20. Boundary transition zone between adjoining ecosystems
Down
- 1. Two words; Information about past environments that represent changes in climate; also called a climate proxy
- 2. Elevation differences in a local landscape
- 3. Physical weathering of rocks that occurs by mechanical forcing of rock joints
- 5. Two words; ecosystem that consists of pine, spruce, and fir
- 6. Science that analyzes and describes origin, evolutions, etc. of landforms
- 7. Instrument used to detect and record ground motion during an earthquake
- 9. Two words; Decomposition of minerals in rocks through chemical alteration
- 10. The study of the Earth's past climates
- 14. Form of weathering; associated with fragmentation of rock by pressure release
- 15. The largest plutonic form exposed at the surface
- 16. Rock of Earth's crust below the soil; unweathered